Ramírez spent six years in the Rangers' farm system, playing for the Spokane Indians in 2008 and the Hickory Crawdads in 2009 and 2010. , triple-A affiliates of the Texas Rangers, in On August 17, he was promoted to Triple-A at Round Rock in place of Eric Hurley who was placed on the disabled list with viral infection. Prior to his promotion, on July 15, Ramírez was sent to rehab in Double-A Frisco, Texas due to a sore shoulder. He was quoted as saying to MLB.com that the absence had not bothered him. On November 18, 2011, Ramírez was added to the Rangers' 40-man roster.
Chicago Cubs
On August 23, 2013, Ramírez was traded to the Chicago Cubs as the player to be named later in the July 2013 trade of Matt Garza. By June 9, 2014, through 14 innings pitched, he had struck out 23 players while having only.71 walks plus hits per inning pitched rating. On June 5, 2014, Ramírez earned his first career save in a victory over the New York Mets. Ramírez finished the year with a 1.44 ERA in 43.2 innings pitched
Milwaukee Brewers
On May 31, 2016, Ramírez was claimed off waivers by the Milwaukee Brewers.
Minnesota Twins
On June 12, 2016, Ramírez was claimed off waivers by the Minnesota Twins.. He finished the year with a 6.00 ERA in 24 innings
On May 4, 2017, Ramírez was claimed off waivers by the Toronto Blue Jays. He was designated for assignment on May 9 without having thrown a pitch for the Blue Jays. On May 14, Ramírez elected free agency after being outrighted to the minor leagues.
New York Mets
On May 16, 2017, the New York Mets signed Ramírez. On July 20, the Mets designated Ramírez for assignment.
On July 27, 2017, Ramírez signed a minor league deal with the Washington Nationals. He elected free agency on November 6, 2017.
Cleveland Indians
Ramírez signed a minor league contract with the Cleveland Indians on November 30, 2017. The Indians purchased Ramírez's contract on May 15, 2018. He finished the season with an ERA of 4.54 in innings, his most output since his rookie season in 2014. He began the 2019 season in the bullpen. He was designated for assignment by the Indians on May 18, 2019 after registering an ERA of 5.40 in innings. After clearing waivers, Ramírez accepted a minor league assignment to the Columbus Clippers, the Indians' Triple-A affiliate, on May 23, 2019. He was released on August 2, 2019.
Second stint with Blue Jays
On August 6, 2019, Ramirez signed a minor league deal with the Toronto Blue Jays. He was called up by the Blue Jays on August 11. On September 1, Ramirez was designated for assignment. He declared free agency on September 4, 2019.
Los Angeles Angels
On December 22, 2019, ramirez signed a minor league deal with the Los Angeles Angels that included an invitation to Spring Training.
Scouting report
According to Baseball America, Ramírez is tall, weighs, and can throw his fastball at.
